SemifinalMarcel Latak vs. Jamie Mackenzie US Open 2026 9/11/26, 4:00 PM Follow Video livestream of the match Marcel Latak vs. Jamie Mackenzie in the semifinals of the US Open 2026 on 09/11/2026 #tennis #usopen #usopen2026 #juniorsTennisUS OpenjuniorsUS Open 2026 is responsible for live signal, commentators and chat-moderation. This livestream is only available in some countries: Germany , Austria , Switzerland